SIS SS 1275-1983 Fittings for piping - Check valves for PN 16 — Angle globe valves of cast iron with flanged ends, spring-loaded disk and sealing surfaces of stainless steel
1983SIS SS 1275-1983 Fittings for piping - Check valves for PN 16 — Angle globe valves of cast iron with flanged ends, spring-loaded disk and sealing surfaces of stainless steel